Accession Number : AD0776994

Title :   Study of Nonlinear Acoustics for the Purpose of Processing Sophisticated Signals.

Descriptive Note : Final rept. 30 Nov 70-29 Nov 73,

Corporate Author : STANFORD UNIV CALIF MICROWAVE LAB

Personal Author(s) : Quate,C. F.

Report Date : FEB 1974

Pagination or Media Count : 56

Abstract : The nonlinear interaction between two surface acoustic waves can be used in a number of signal processing devices. In this report the principles which underlie this interaction are developed both theoretically and experimentally. In the signal processing devices it is demonstrated that both convolution and fourier transformations can be carried out in real time. In the imaging work it is shown that acoustic surface waves can be used to scan optical images which are projected onto a semiconducting layer of silicon. This scanning process transfers spatial image pattern into a temporal pattern which can be transmitted electrically to a remote display station. (Modified author abstract)

Descriptors :   *Acoustic waves, *Signal processing, Piezoelectric materials, Semiconductors, Surface waves, Space charge, Nonlinear systems, Silicon, Piezoelectric effect

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices
      Acoustics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE